We have a high end memory foam mattress in the house. The camper had a soft mattress and we put a memory foam topper on it. We moved the old topper to the new toyhauler with a very firm mattress. The old topper didn't help. We went to 4 or 5 different bed place on Saturday. None of them had a topper in stock. On;y samples. We just happened to go to Costco after the topper shopping and there was a bunch of them. All on sale. $109.00 on sale. The bed stores were all talking $199.00.
We haven't slept on it yet, but it felt very good.